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Mostrando ítems 21-30 de 130
Problemas correntes sobre nucleação, crescimento de cristais e difusão em vidros.
(Universidade Federal de São Carlos, 2004-12-10)
Preparação e caracterização de nanocompósitos de LDPE e LDPE/EVA com partículas de Ag/TIO2 para aplicações antimicrobiais
(Universidade Federal de São Carlos, 2009-10-02)
This study investigated the use of a charger inorganic (titanium dioxide) as a support for silver nanoparticles and evaluated the use of material obtained as filler in polymer for antimicrobial application.Silver ...
Processamento e caracterização de condutores de íons O2- a partir de cerâmicas BIMEVOX.
(Universidade Federal de São Carlos, 2005-11-11)
In this work, the processing of BIMEVOX family ceramics (ME-doped bismuth vanadate, ME =Cu2+, Fe3+ and Ti4+), obtained by precursor oxides fusion method was studied. The resulting powders were valued by X ray diffraction, ...
Determinação da energia de fratura em materiais cerâmicos em altas temperaturas.
(Universidade Federal de São Carlos, 2005-03-11)
In this work, the main objective was to determine the energy of fracture in
ceramic materials, focused on refractories, at high temperatures and to inquire
the interference of the creep on this measurement. Therefore, ...
Obtenção de biovitrocerâmicas por cristalização controlada do vitro 1Na2O.2CaO.3SiO2.
(Universidade Federal de São Carlos, 2003-09-16)
Glass-ceramics used as implant in tissue attachment bioactive classification type, show better mechanical strength than related glasses or ceramics, but without significant bioactivity loss. It was not analysed the bioactivity ...
Desenvolvimento e caracterização de blendas PHBV/Ecoflex® e suas modificações com amidos
(Universidade Federal de São Carlos, 2008-05-30)
Plastics materials produced from petrochemicals are widely used due to
their versatility, mechanical properties and low cost, but they cause environmental
impact as a consequence of the accumulation of great amount of ...
Avaliação da resistência à corrosão da liga 2024-T351 soldada por FSW Friction Stir Welding
(Universidade Federal de São Carlos, 2007-09-14)
The corrosion resistance of aluminum alloy can be impaired due to
intermetallic precipitation during thermal treatment to improve mechanical
properties. This work investigates the corrosion resistance of aluminum alloy
2024-T351 ...
Crescimento de grãos anômalos em titanato de bário.
(Universidade Federal de São Carlos, 2004-04-05)
Barium Titanate (BaTiO3) and derived material are extensively used in the manufacture for a large range of electronic components like multilayer ceramic capacitors (MLCC), semi-conductor devices, PTCR (positive ...
Obtenção de nanocompósitos de poliamida 6 / argila nacional com diferentes agentes compatibilizantes
(Universidade Federal de São Carlos, 2005-09-01)
The formation of nanocomposites well exfoliated is dependent of several factors, like organic treatment with appropriate ammonium quaternary salts to promote adequate interaction between polymer and clay. The objective of ...
Modificação do Poli(hidroxibutirato) PHB com nucleantes e com o copolímero (etileno-co-acetato de vinila) - EVA
(Universidade Federal de São Carlos, 2008-03-19)
In this work, we sought to modify PHB, processing it in the melted state, and to
evaluate the effect of the modifications on its mechanical properties and
biodegradation characteristics. The following systems were therefore ...